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		<doi>10.1109/SIBGRAPI.2009.28</doi>
		<citationkey>PereiraVelh:2009:RgImEd</citationkey>
		<title>Rgbn Image Editing</title>
		<format>Printed, On-line.</format>
		<year>2009</year>
		<numberoffiles>1</numberoffiles>
		<size>2386 KiB</size>
		<author>Pereira, Thiago,</author>
		<author>Velho, Luiz Carlos Pacheco Rodrigues,</author>
		<affiliation>Instituto de Matematica Pura e Aplicada</affiliation>
		<affiliation>Instituto de Matematica Pura e Aplicada</affiliation>
		<editor>Nonato, Luis Gustavo,</editor>
		<editor>Scharcanski, Jacob,</editor>
		<e-mailaddress>tpereira@impa.br</e-mailaddress>
		<conferencename>Brazilian Symposium on Computer Graphics and Image Processing, 22 (SIBGRAPI)</conferencename>
		<conferencelocation>Rio de Janeiro, RJ, Brazil</conferencelocation>
		<date>11-14 Oct. 2009</date>
		<publisher>IEEE Computer Society</publisher>
		<publisheraddress>Los Alamitos</publisheraddress>
		<booktitle>Proceedings</booktitle>
		<tertiarytype>Full Paper</tertiarytype>
		<transferableflag>1</transferableflag>
		<versiontype>finaldraft</versiontype>
		<keywords>RGBN, normal map, gradient reconstruction, normal processing, &#64257,ltering, deformation.</keywords>
		<abstract>We propose a method to edit RGBNs (images with a color and a normal channel). High resolution RGBNs are easy to obtain using photometric stereo. Free editing will result in normals which do not correspond to any realizable surface. Our normal operators guarantee the integrability of the results. Our method can &#64257;lter normals with any linear kernel allowing high-pass and edge-enhancement &#64257;lters. We have designed a normal linear combination method for adding details with frequency control. New geometric features can be created with a custom brush that warps deformations along its path. A nonlinear operator is also proposed. Its integrability is controlled with a two-band separation of frequencies: smooth shape and details. .</abstract>
		<language>en</language>
		<targetfile>rgbn_image_editing.pdf</targetfile>
		<usergroup>tpereira@impa.br</usergroup>
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